Does anyone know how to use the UART connection on the UP Xtreme i11?
SimonB
New Member Posts: 5 ✭
The User's Manual for the i11 shows a UART connection on CN11. up_xtreme_i11_upx-tgl01_manual_1st_ed_0615_1.pdf, section 2.3.9.
Pins 8, 9 and 10 of that connector are GND, UART_TX and UART_RX.
But I can't find out much about that connection. Is it a standard serial port I can use? Do I need a level shifter in order to connect it to an RS232 device, and if so is it 3.3V or 5V?
Best Answer
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@SimonB
UART and RS232 are not the same. The i11 's CN11 that outputs UART using 0 ~ 3.3V TTL level.
So, you'll need a UART to RS232 converter.
More information about RS232. FYI.
RS232 Protocol – Basics
